{"id":88105,"date":"2020-07-12T13:42:29","date_gmt":"2020-07-12T11:42:29","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dlya-postgresql-podgotovleno-dopolnenie-age-dlya-hraneniya-dannyh-v-forme-grafa"},"modified":"2020-07-12T13:42:29","modified_gmt":"2020-07-12T11:42:29","slug":"dlya-postgresql-podgotovleno-dopolnenie-age-dlya-hraneniya-dannyh-v-forme-grafa","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/dlya-postgresql-podgotovleno-dopolnenie-age-dlya-hraneniya-dannyh-v-forme-grafa","title":{"rendered":"Az PostgreSQL-hez elk\u00e9sz\u00fclt az AGE kieg\u00e9sz\u00edt\u0151 a grafikon form\u00e1j\u00e1ban t\u00f6rt\u00e9n\u0151 adatkezel\u00e9shez.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

PostgreSQL-hoz aj\u00e1nlott<\/a><\/noindex> AGE kieg\u00e9sz\u00edt\u0151 (AgensGraph-Extension) lek\u00e9rdez\u0151 nyelv megval\u00f3s\u00edt\u00e1s\u00e1val openCypher<\/a><\/noindex> hierarchikus adatstrukt\u00far\u00e1k, amelyek egy gr\u00e1fot alkotnak. A gr\u00e1forient\u00e1lt adatb\u00e1zisok oszlopok \u00e9s sorok helyett egy olyan strukt\u00far\u00e1t haszn\u00e1lnak, amely hasonl\u00f3 egy h\u00e1l\u00f3zathoz \u2014 csom\u00f3pontok, azok attrib\u00fatumai \u00e9s a csom\u00f3pontok k\u00f6z\u00f6tti kapcsolatok vannak megadva. AGE terjeszt\u00e9sre ker\u00fcl<\/a><\/noindex> Apache 2.0 licenc alatt, a Bitnine \u00e1ltal \u00e1tadva az Apache Alap\u00edtv\u00e1ny v\u00e9dn\u00f6ks\u00e9ge al\u00e1, \u00e9s jelenleg az Apache inkub\u00e1torba ker\u00fclt. <\/p>\n

A projekt folytatja az adatb\u00e1zis-kezel\u0151 rendszer fejleszt\u00e9s\u00e9t AgensGraph<\/a><\/noindex>, amely k\u00e9pvisel<\/a><\/noindex> a gr\u00e1fok feldolgoz\u00e1s\u00e1ra \u00e1t\u00edrt PostgreSQL m\u00f3dos\u00edt\u00e1s. A kulcsfontoss\u00e1g\u00fa k\u00fcl\u00f6nbs\u00e9g az AGE megval\u00f3s\u00edt\u00e1sa, amely egy univerz\u00e1lis kieg\u00e9sz\u00edt\u0151 form\u00e1j\u00e1ban m\u0171k\u00f6dik, mint a PostgreSQL hivatalos kiad\u00e1sainak kieg\u00e9sz\u00edt\u00e9se. A k\u00f6zelm\u00faltban megjelent Apache AGE 0.2.0<\/a><\/noindex> t\u00e1mogatja a PostgreSQL 11 haszn\u00e1lat\u00e1t.<\/p>\n

Jelen \u00e1llapot\u00e1ban az AGE t\u00e1mogatja<\/a><\/noindex> a Cypher lek\u00e9rdez\u00e9si nyelv lehet\u0151s\u00e9gei, mint p\u00e9ld\u00e1ul a 'CREATE' kifejez\u00e9s alkalmaz\u00e1sa csom\u00f3pontok \u00e9s kapcsolatok meghat\u00e1roz\u00e1s\u00e1ra, a 'MATCH' kifejez\u00e9s az adatok keres\u00e9s\u00e9re a gr\u00e1fban meghat\u00e1rozott felt\u00e9telek (WHERE) szerint, a megadott sorrendben (ORDER BY) \u00e9s a be\u00e1ll\u00edtott korl\u00e1toz\u00e1sokkal (SKIP, LIMIT). A lek\u00e9rdez\u00e9s \u00e1ltal visszaadott adatk\u00e9szlet a 'RETURN' kifejez\u00e9s seg\u00edts\u00e9g\u00e9vel van meghat\u00e1rozva. T\u00f6bb lek\u00e9rdez\u00e9s l\u00e1ncol\u00e1s\u00e1hoz el\u00e9rhet\u0151 a 'WITH' kifejez\u00e9s. <\/p>\n

T\u00f6bbmodelles adatb\u00e1zisok l\u00e9trehoz\u00e1sa lehets\u00e9ges, amelyek a gr\u00e1f form\u00e1j\u00e1ban t\u00e1rolt tulajdons\u00e1gok hierarchikus t\u00e1rol\u00e1si modelljeit, kapcsolatos modelleket \u00e9s JSON form\u00e1tum\u00fa dokumentumt\u00e1rol\u00e1si modelleket \u00f6tv\u00f6znek. T\u00e1mogatottak az integr\u00e1lt lek\u00e9rdez\u00e9sek v\u00e9grehajt\u00e1sa, amelyek SQL \u00e9s Cypher nyelvek elemeit tartalmazz\u00e1k.
\nIndexek l\u00e9trehoz\u00e1sa lehets\u00e9ges a gr\u00e1f csom\u00f3pontjai \u00e9s \u00e9lei tulajdons\u00e1gaihoz.
\nAz Agtype kib\u0151v\u00edtett t\u00edpusk\u00e9szlet\u00e9t k\u00edn\u00e1lj\u00e1k, bele\u00e9rtve a gr\u00e1fban tal\u00e1lhat\u00f3 \u00e9lekhez, csom\u00f3pontokhoz \u00e9s utakhoz tartoz\u00f3 t\u00edpusokat. Az aggreg\u00e1l\u00f3 kifejez\u00e9sek m\u00e9g nincsenek megval\u00f3s\u00edtva. A rendelkez\u00e9sre \u00e1ll\u00f3 speci\u00e1lis funkci\u00f3k k\u00f6z\u00e9 tartozik: id, start_id, end_id, type, properties, head, last, length, size, startNode, endNode, timestamp, toBoolean, toFloat, toInteger \u00e9s coalesce. <\/p>\n

<\/a><\/noindex><\/p>\n

Forr\u00e1s: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0414\u043b\u044f PostgreSQL \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043e \u0434\u043e\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 AGE (AgensGraph-Extension) \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u044f\u0437\u044b\u043a\u0430 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 openCypher \u0434\u043b\u044f \u043c\u0430\u043d\u0438\u043f\u0443\u043b\u044f\u0446\u0438\u0439 \u0441 \u043d\u0430\u0431\u043e\u0440\u0430\u043c\u0438 \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0445 \u043c\u0435\u0436\u0434\u0443 \u0441\u043e\u0431\u043e\u0439 \u0438\u0435\u0440\u0430\u0440\u0445\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0434\u0430\u043d\u043d\u044b\u0445, \u043e\u0431\u0440\u0430\u0437\u0443\u044e\u0449\u0438\u0445 \u0433\u0440\u0430\u0444. \u0412\u043c\u0435\u0441\u0442\u043e \u0441\u0442\u043e\u043b\u0431\u0446\u043e\u0432 \u0438 \u0441\u0442\u0440\u043e\u043a \u0433\u0440\u0430\u0444\u043e-\u043e\u0440\u0438\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u044b\u0435 \u0411\u0414 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0443, \u043f\u043e\u0445\u043e\u0436\u0443\u044e \u043d\u0430 \u0441\u0435\u0442\u044c — \u0437\u0430\u0434\u0430\u044e\u0442\u0441\u044f \u0443\u0437\u043b\u044b, \u0438\u0445 \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u0430 \u0438 \u043e\u0442\u043d\u043e\u0448\u0435\u043d\u0438\u044f \u043c\u0435\u0436\u0434\u0443 \u0443\u0437\u043b\u0430\u043c\u0438. AGE \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 Apache 2.0, \u043f\u0435\u0440\u0435\u0434\u0430\u043d \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0435\u0439 Bitnine \u043f\u043e\u0434 \u043f\u043e\u043a\u0440\u043e\u0432\u0438\u0442\u0435\u043b\u044c\u0441\u0442\u0432\u043e \u0424\u043e\u043d\u0434\u0430 Apache […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-88105","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47PostgreSQL-hez k\u00e9sz\u00fclt AGE kieg\u00e9sz\u00edt\u0151 az adatok gr\u00e1f form\u00e1j\u00e1ban val\u00f3 t\u00e1rol\u00e1s\u00e1ra | ProHoster","description":"PostgreSQL-hez AGE (AgensGraph-Extension) kieg\u00e9sz\u00edt\u0151t javasoltak, amely lek\u00e9rdez\u0151 nyelv 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